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All Journal Construction and Material Journal Logic : Jurnal Rancang Bangun Dan Teknologi
Hari Purwanto
Politeknik Negeri Jakarta
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PERBANDINGAN METODE KONVENSIONAL DENGAN BIM TERHADAP EFISIENSI BIAYA, MUTU, WAKTU Rizal Maulana Rizqy; Nunung Martina; Hari Purwanto
Construction and Material Journal Vol. 3 No. 1 (2021): Construction and Material Journal Vol. 3 No. 1 Maret 2021
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v3i1.3506

Abstract

The construction field in Indonesia has been developing briskly. It can be proved by the discovery of the new method in the construction field, the Building Information Modelling (BIM) method. This BIM method is claimed to help finish the work more effective and less cost compare using the previous methods. It is because each application should be made manually and separately. Unlike the conventional method, the BIM method has the applications integrated into one, so it can accelerate the work progress and minimalize human resources. This research discusses the contrast of the construction planning process, especially when making the work method, and shop drawing, which reviewed from cost, quality, and time aspect. This research also examines the advantages and disadvantages of using the BIM method because it is categorized as a new method. The questionnaire and the interview method are used to collect the data. This research subject is the drafters and engineers already experienced in the construction field by applying the BIM method. The case of this study is Toll Road Jakarta – Cikampek II Selatan (Paket 3), with comparing the cost and time efficiency between conventional and BIM methods. The results show that the work will be done 43.82% faster using the BIM method than the conventional one. However, the required cost will be more expensive by using the BIM method because it will be allocated to invest in the software license. Keywords: Cost, Quality, and Time; Building Information Modelling (BIM); Conventional Methods.  
APPLICATION OF COMMON DATA ENVIRONMENT (CDE) AS A METHOD OF DESIGN REVIEW IN CONSTRUCTION PROJECT Sabrina Ayu Lestari; Hari Purwanto; Jonathan Saputra
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (593.501 KB) | DOI: 10.31940/logic.v22i2.103-109

Abstract

Abstract. The development of technology in construction projects produces a method known as Building Information Modelling (BIM). Common Data Environment (CDE) is one of the cloud technology adoption systems that can effectively convey various data information from several BIM softwares without having to download the softwares. Searching for accurate project information according to the latest version takes a long time if the document or information is not well structured. This study aims to analyze the application of CDE to the project in the design review and to determine the criteria that affect the success of the implementation of CDE in the design review and the biggest obstacles in the use of CDE. This research was conducted using a survey method which was distributed to representative respondents. The results showed that the implementation of CDE as a design review on the project was in accordance with CDE standards with an average respondent's level of achievement of 83.28%. The most influential criterion on the success of CDE implementation in the design review is data security. The biggest obstacles are in the form of lack of cooperation between CDE users, undisciplined use, and data that is not always updated.
Risk Analysis of Investment Costs in PPP Projects Using Monte Carlo Simulation Roihans Muhammad Iqbal; Hari Purwanto
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 1 (2022): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1103.901 KB) | DOI: 10.31940/logic.v22i1.13-21

Abstract

Infrastructure project investment is a substantial urgency in line with the vision of President Jokowi’s administration of developing infrastructure in Indonesia. The Government and Private Sector partnership (PPP) becomes feasible alternative to cover the financial deficit in the provision of infrastructure. The South Jakarta-Cikampek II Toll Road Project has been determined to be operated under the PPP scheme. The identification, allocation, and appropriate risk mitigation of the projects are the important success keys to provide clarity and benefits for among the parties. The purpose of this study is to analyze 27 risk variables from PT PII guidelines qualitatively and quantitatively with probabilistic principles using Monte Carlo simulations, by then accurately to estimate the values of the effect of each risk on the project investment value. The research was carried out by collecting project data, identifying risk variables, questionnaires to experts, risk quantification, Monte Carlo simulation, calculating the effect and value of risk, as well as analysis of risk allocation and mitigation based on the Pareto Principle. The study shows that of 26 influential risk categories and one (1) risk does not affect the investment component of the project. There are 12 Risks could be allocated to the Government and 14 Risks could be allocated to Private Sector. The total value of the amount of risk cost is Rp16,424,331,645,796 (21% of total risk investment value). Based on Pareto, 30% risk categories (equal to 8 risks) are the dominant factors of which equal to 70% of the total value of risk. Hence the mitigation may focus to reduce the dominant factors to lower risk by then decrease the value of risk Rp9,885,627,136,618 that equal to 60% become Rp6.538.704.509.178 (equal to 40% of risk value).
Co-Authors Nunung Martina Rizal Maulana Rizqy Roihans Muhammad Iqbal Sabrina Ayu Lestari Saputra, Jonathan